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164725023 = 3181303361
BaseRepresentation
bin10011101000110…
…00000100011111
3102110221220020210
421310120010133
5314132200043
624202343503
74040065611
oct1164300437
9373856223
10164725023
1184a8a391
12471bab93
1328186338
1417c3cdb1
15e6dc633
hex9d1811f

164725023 has 8 divisors (see below), whose sum is σ = 220847536. Its totient is φ = 109209600.

The previous prime is 164725021. The next prime is 164725031. The reversal of 164725023 is 320527461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164725023 - 21 = 164725021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164725021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151138 + ... + 152223.

It is an arithmetic number, because the mean of its divisors is an integer number (27605942).

Almost surely, 2164725023 is an apocalyptic number.

164725023 is a deficient number, since it is larger than the sum of its proper divisors (56122513).

164725023 is a wasteful number, since it uses less digits than its factorization.

164725023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303545.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 164725023 is about 12834.5246503328. The cubic root of 164725023 is about 548.1757998404.

The spelling of 164725023 in words is "one hundred sixty-four million, seven hundred twenty-five thousand, twenty-three".

Divisors: 1 3 181 543 303361 910083 54908341 164725023